A pen is a common writing instrument used to apply ink to a surface, usually paper, for writing or drawing. Historically, reed pens, quill pens, and dip pens were used, afterward a nib dipped in ink. Ruling pens allow truthful getting used to of descent width, and yet find a few specialized uses, but rarefied pens such as the Rapidograph are more commonly used. liberal types combine ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main radical types of pens can be categorized by the kind of writing tip or point upon the pen:
A ballpoint pen dispenses an oil-based ink by rolling a little difficult sphere, usually 0.51.2 mm and made of brass, steel, or tungsten carbide. The ink dries going on for immediately on way in following paper. The ballpoint pen is usually reliable and comes in both inexpensive and expensive types. It has replaced the fountain pen as the most common tool for unknown writing. (There are definite ballpoint pens combining combined colours in a single barrel; the writer or artist may afflict the tip in the same way as the desired colour). Lszl Br patented the first commercially wealthy ballpoint pen.
A rollerball pen dispenses a water-based liquid or gel ink through a ball tip similar to that of a ballpoint pen. The less-viscous ink is more easily absorbed by paper than oil-based ink, and the pen moves more easily across a writing surface. The rollerball pen was initially expected to append the ease of use of a ballpoint pen when the smooth "wet ink" effect of a fountain pen. Gel inks are affable in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, animate shades, shady colors, invisible ink, see-through effect, gleaming colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become open using cartridges of fountain pen ink.
A fountain pen uses water-based liquid ink delivered through a nib. The ink flows from a reservoir through a "feed" to the nib, next through the nib, due to capillary be active and gravity. The nib has no moving parts and delivers ink through a thin slit to the writing surface. A fountain pen reservoir can be refillable or disposable; the disposable type is called an ink cartridge. A pen in the manner of a refillable reservoir may have a mechanism, such as a piston, to draw ink from a bottle through the nib, or it may require refilling subsequently an eyedropper. Refill reservoirs, then known as cartridge converters, are simple for some pens which use disposable cartridges. A fountain pen can be used bearing in mind long-lasting or non-permanent inks.
A felt-tip pen, or marker, has a spongy tip of fibrous material. The smallest, finest-tipped felt-tip pens are used for writing on paper. Medium-tipped felt-tips are often used by children for coloring and drawing. Larger types, often called "markers", are used for writing in larger sizes, often upon further surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers as soon as wide tips and bright but transparent ink, called highlighters, are used to bring out text that has already been written or printed. Pens expected for children or for performing arts writing (as subsequent to a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or further packages are usually permanent markers.
A gel pen uses ink in which pigment is suspended in a water-based gel. Because the ink is thick and opaque, it shows in the works more helpfully on dark or smooth surfaces than the typical inks used in ballpoint or felt tip pens. Gel pens can be used for many types of writing and illustration. Gel pens often come in gleaming or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a little tool for some supplementary form of marking or shaping, for example, in pottery. It can also be a computer adjunct that is used to put up to in navigating or providing more correctness behind using touchscreens. It usually refers to a narrow elongated staff, thesame to a enlightened ballpoint pen. Pens exist which contain a ballpoint tip on one end and this sort of touchscreen stylus upon the other.
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